Defective heart valves that do not close completely could result in
A) oxygen-rich blood mixing with oxygen-depleted blood.
B) increased pulmonary flow.
C) venous gas exchange within the heart chambers.
D) atrial exchange of excess blood.
E) some blood flowing back into the atrium with each heartbeat.

Question

Quizplus · Accepted Answer

Defective heart valves that do not close completely can result in some blood flowing back into the atrium with each heartbeat. This condition is called regurgitation, and it can cause a variety of symptoms depending on the severity of the valve dysfunction. In the case of the heart's mitral valve, which separates the left atrium from the left ventricle, regurgitation can lead to shortness of breath, fatigue, and other symptoms.

Defective Heart Valves That Do Not Close Completely Could Result